2018 United States elections

2018 United States elections

Mid-term elections
Election day	November 6
Senate elections
Seats contested	33 seats of Class I (+ Special Elections for 2 seats of Class II)
Map of the 2018 Senate races   Dem. incumbent running   Dem. incumbent retiring   Rep. incumbent running   Rep. incumbent retiring   Ind. incumbent running   No election
House elections
Seats contested	All 435 voting seats (+ 5 of 6 non-voting seats)
Gubernatorial elections
Seats contested	39 (36 states, 3 territories)
Map of the 2018 gubernatorial races   Democratic incumbent eligible for reelection   Term-limited or retiring Democrat   Republican incumbent eligible for reelection   Term-limited or retiring Republican   Independent incumbent eligible for reelection   No election

The 2018 United States elections will mostly be held on Tuesday, November 6, 2018. These midterm elections will take place in the middle of Republican President Donald Trump's term. All 435 seats in the United States House of Representatives and 35 of the 100 seats in the United States Senate will be contested. 39 state and territorial governorships and numerous other state and local elections will also be contested.

The primary season runs from March to September 2018.

The 33 senators in Senate Class I will be up for election. 23 of the seats to be contested are presently held by Democrats, and eight by Republicans (three of which are retiring), with two being independents. The continuing senators are 43 Republican, and 24 Democrat.

Additionally, special elections are scheduled for the same day, to fill vacancies in the other two Senate Classes: in Minnesota, and Mississippi.

All 435 voting seats in the United States House of Representatives will be up for election. Additionally, elections will be held to select delegates for the District of Columbia and the U.S. territories, with the exception of the Resident Commissioner of Puerto Rico, who serves a four-year term.

During or prior to the 2018 House election on November 6, there will be at least five special elections:

• Special election in Pennsylvania's 18th congressional district following the resignation of Tim Murphy, held on March 13, 2018; won by Conor Lamb (D)
• Special election in Arizona's 8th congressional district following the resignation of Trent Franks, held on April 24, 2018; won by Debbie Lesko (R)
• Special election in Texas's 27th congressional district following the resignation of Blake Farenthold, to be held on June 30, 2018.
• Special election in Ohio's 12th congressional district following the resignation of Pat Tiberi, to be held on August 7, 2018.
• Special election in Michigan's 13th congressional district following the resignation of John Conyers, to be held on November 6, 2018, coinciding with the regular elections.

In November 2017, the number of Republican congresspeople announcing their impending retirements or resigning their seats was vastly higher than since the 2006 Congress.^[1] Most of these congresspeople faced tough reelection bids in 2018.^[1] The number of retirements by Democrats was in line with previous Congresses.^[1] The disproportionate number of Republican impending retirements is likely to harm Republican prospects in the 2018 mid-term elections as there will be fewer districts where Republicans have the incumbency advantage.^[2][3] (Furthermore, and uniquely, a record number of members of the Democratic Socialists of America will be running for assorted offices nationwide in reaction to the Presidency of Donald Trump.)^[4]

The 2018 state elections will impact the redistricting that will follow the 2020 United States Census, as many states task governors and state legislators with drawing new boundaries for state legislative and Congressional districts.

Elections will be held for the governorships of 36 U.S. states and three U.S. territories, as well as for the Mayor of the District of Columbia. Special elections may be held for vacancies in the other states and territories, if required by their state/territorial constitutions.

87 of the 99 state legislative chambers are holding regularly scheduled elections in 2018, as will six of the nine territorial legislative chambers. Louisiana, Mississippi, New Jersey, and Virginia do not hold regularly scheduled legislative elections in even years. Puerto Rico does not hold regularly scheduled legislative elections outside of presidential election years. Kansas, Minnesota, New Mexico, South Carolina, and American Samoa will only hold elections for their lower houses. In legislative chambers that use staggered terms, only a portion of the seats in the chamber will be up for election.

Major cities which are holding mayoral elections in 2018 include:

• Newark, New Jersey: Incumbent mayor Ras J. Baraka was re-elected to a second term with 77.05% of the vote.
• Phoenix, Arizona: Thelda Williams is the incumbent and acting mayor after Greg Stanton chose to resign on May 29, 2018, to seek election for the United States Congress.
• San Francisco, California (special): Mark Farrell is acting mayor following the death of Ed Lee.
• Washington, D.C.: Incumbent Muriel Bowser (D) is running for reelection.
• Nashville, Tennessee: Acting Mayor David Briley won election with 54.47%, avoiding a runoff.
• Louisville, Kentucky

This table shows the partisan results of Congressional, gubernatorial, and state legislative races held in each state and territory in 2018. Note that not all states and territories hold gubernatorial, state legislative, and United States Senate elections in 2018; additionally, the territories and Washington, D.C. do not elect members of the United States Senate. Washington, D.C. and the five inhabited territories each elect one non-voting member of the United States House of Representatives. Nebraska's unicameral legislature and the governorship and legislature of American Samoa are officially non-partisan. In the table, offices/legislatures that are not up for election in 2018 are already filled in for the "after 2018 elections" section, although vacancies or party switching could potentially lead to a flip in partisan control.